Flavel simonson



(No Modem F. SI'MONSON. LOG LIFTBR AND TURNER.

No. 448,591. Patented Mar. 17, 1891.

UNITED STATES PATENT Erice,

ELAvEL sIMoNsoN, oE MILWAUKEE, WISCONSIN, AssIGNoR rro GEORGE H.

" CHAMBERLAIN, or SAME PLACE.

LOG LIFTER AND TURNER.

SPECIFICATION forming part of Letters Patent No. 448,591, dated March17, 1891. Application iiled February 13, 1890. Renewed `November 22,1890. Serial No. 372,298. (No model.)

To @ZZ whom it may concern: latter from being tilted over backward by Beit known that I, FLAVEL SIMONSON, a any sudden jar. N o claim to thehook is citizen of the United States of America, remade in thisapplication,as its novel features 55 siding at liiilwaukee, in thecounty of Milhave been made the subjectmatter of claim 5waukeeandStateofiVisconsin,haveinvented in another application filed byme in the a certain new and Improved Log Lifter and United States PatentOifice of even date Turner, of which the following is aspecificaherewith. Y tion, reference being had therein to the ac* G arestandards, in whose upper ends are 6o comganying drawing. y pivoted therear ends of the lifting-bars G, ro My invention relates to certainimprovethe free ends of these bars restingon cams H, ments in loglifting and turning machines of keyed on the rock-shaft C. The frontends the class in which the log is lifted from the of the lifting-barsare sharpened, as shown,

logwars )ushed onto the saw-mill carriage to revent the lo@ from sli in0f. 6

l C e e. 5 and then drawn clear of the carriage 1n the The constructionof the lifting-bars and I5 operation of turning it. their attachment tostandards form no part The object of my present invention is to of thepresent invention, as these features provide improved means foroperating the' are claimed in another application for United rock-shaftand controlling the movements of States Patent filed by me October 1G,1889, 7o the hook. and numbered 327,1(1'8.

2o The invention will iirst be described in I is the power-shaft,provided with a belt;-l

connection with the accompanying drawing, pulley i, which is connectedwith some suitwhich is a perspective View of my machine, able motor, theshaft being supported in and then pointed out in the claims. hangers z",depending from the floor, On this 75 In the drawing, A represents thefloor of shaft are secured two beveled friction-wheels 2 5 the mill,upon which the machine is set, parts l 2, which are adapted to be throwninto gear of the iloorbeing broken out to show portions alternately witha like friction-wheel 3 on a Of the machine, shaft J, supported inhangers j and carrying B is one of the logways, constructed iu the twosmall pinions K K. 80 usual manner. It will be understood that L and Maretwo rack-bars, which, however,

3o there are two of these logways, one at each are provided withrack-teeth for only a porside of the machine, and each of them has antion of their length, the toothed portions of abutment at h, againstwhich the log rests at the bars being adapted to engage with the thetime the machine is put into operation. pinions K K. One of theserack-bars L is 85 C is the rock-shaft, mounted in pillowpivoted to oneof the push-arms, and the other 3 5 blocks c, and on theshaft,preferably outside rack-bar M is pivoted at m to the hook, ecofthe pillow-blocks, are secured the pushcentric to the point of pivotalattachment of arms D. the hook to the hook-arms. The toothed por- E Eare two arms secured on shaft C a short tions of the rack-bars areT-shaped in cross- 9o distance apart, and in the upper ends of thesesection, and consequently the upper sides of 4o arms is pivoted the hookF, which when down the bars are iianged, as at l, for a purpose rests ona block e, secured between arms E. presently to be described. y rlhebutt of the hook is bifuroated, and each N is a rocking yoke, pivotedcentrally to a branch is separately pivoted to its respective ,bracketN', secured to the under side of the 95 arm E. On the rear end of eachbranch of iioor. EachA end of the yoke has a T-shaped 45 the hook-buttthere is formed an outwardlyslot n, these slots being adapted to receiveprojecting lug j", which rides freely over the the iianged portions ofthe rack-bars L and upper rounded ends of arms E when the hook M, andthe yoke is provided centrally with is canted forward to engage with thelog,but an arm n', the lower end of which is slotted, roo which Contactwith the back of said arms as at n2. f

5o when the hook is thrown up into the reach- O is a longitudinal shafthung in hangers ing77 position shown and serve to hold the o, dependingfrom. the floor. The ends of hook in that position,thereby preventingthe this shaft are cranked, as at o 02, the crank o engaging in the slotin the arm n of the yoke.

l is a link, one end of which is journaled on the crank o2 of shaft O,its other end being pivoted to a lever Q, extending upward through thefloor.

R is a transverse shaft supported in hangers. (Not shown.) One end ofthis shaft is pivotally connected with the lower end of lever Q, theother end of the shaft being cranked, as at r, for a purpose now to beeX- plained.

S is a metal plate, pivoted at its upper end to a bracket S', secured tothe under side of the floor. This plate is slotted at s te partly passover a disk T on the forward end of the power-shaft I, and below thisslot s there is another slot s to receive the crank r on shaft R.

The operation of my machine is as follows: Assume the parts of themachine to be in the positions shown and the power-shaft moving in thedirection indicated bythe arrow. The hook is now ready to drop andengage the log, assumed to be on the head-block. (Not shown.) Now theoperator moves lever Q rearward,whieh rocks the shaftI R, therebyswinging` the plate 5 forward, which, through the engagement of the diskT with said plate moves the shaft I forward, so as to throw thefriction-wheel l into engagement with wheel 3, thus turning shaftJbackward. This movement draws the hook down into engagement with thelog, draws the log off from the headblock, and turns it, by which timethe pusharms D have fallen to near a level with the lifting-bars G. Theoperator then pushes lever Q forward again, so as to throwfrictionwheels 2 and 3 into gear, when the push-arms are moved forward,pushing the log back onto the head-block, the hook in this movementreleasing its hold on the log and rising to the position shown. liever Qis now brought to a perpendicular in order to throw all thefrictionwheels out of gear and stop the machine. When this is done, theoperator moves the lever sidewise away from the machine, which movement,through link P, rocks shaft 0, and consequently the yoke N. As the yokeisrocked the rack-barMis raised ont of mesh with pinion K and rack-bar Lis forced down into mesh with pinion K. Then the lever is moved to therear throwing friction-wheels l and 3 into gear, so as to run therack-bars backward and pull the push-arms and hook-arms and hook downinto theirnormal position below a level with the liftingbars. As theseparts are drawn down into this position by the rack-bar L, it isapparent that as the rack-bar M is free of its pinion K it would slidebackward at once, and th ns permit the hook to fall back onto the log,were there no provision for arresting this sliding of that bar. lt willbe noticed, however, that as the yoke is not in a level position the bar)l is subject to considerable friction in moving through the slot in theyoke, this friction being suflicient to overcome the backward pressureexerted by the weight of the hook when in the reaching position. By thetime, however, that the hook-arms have arrived at about a, horizontalposition the gravity of the hook will overcome that friction, bar )lwill slide backward, and the hook will fall down onto the block e.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination, with the rock-shaft, the push-arms and the hook-armssecured thereon, and the hook pivoted to the hook-arms, of a shaftbearing two pinions, mechanism for turning said shaft in eitherdirection at will, a rack-bar pivoted to the hook and adapted to engagewith one of the pinions,a rack-bar pivoted to one of the push-arms andadapted to engage with the other pinion, and means for throwing eitherof therack-bars out of and the other into engagement with the pinions atwill, for the purposes set forth.

2. The combination, with the rock-shaft, the push-arms and the hookarmssecu red thereon, and the hook pivoted to the hook-arms, of a shaftbearing two pinions, mechanism for turning said shaft in eitherdirection at the will of the operator, two 'flanged rack-bars adapted toengage with said pinions, one of said bars being pivoted to the hook andthe other to one of the push-arms, a pivoted yoke whose ends are inengagement with the fianges on the rack-bars, and mechanism for rockingthe yoke, for the purposes set forth.

3. The combination, with the pinion-shaft carrying two pinions andcapable of being rotated in either direction at the will of the0perator, and the two rack-bars pivoted as described and adapted toengage with the pinions, of the centrally-pivoted yoke in engagementwith the rack-bars at its ends and provided with a downwardly-extendingslotted arm, a shaft cranked at each end, the crank on one end engagingwith the slot in the yoke-arm, a pivoted lever, and a link one end ofwhich is journaled on the other crank on the said cranked shaft, itsother end being pivoted to the lever, for the purposes set forth.

4. The combination, with the power-sl1aft bearing friction-wheels l 2and disk T, of shaft J, bearing friction-wheel 3 and pinions K K',rack-bars L U, pivoted as described, yoke N, provided with slotted armn, shaft O, having cranks o and 0, shaft lt, having crank r, the slottedplate S, pivoted as described,le Ver Q, pivoted to shaft R, and link l),connecting lever Q and shaft O, all arranged substantially as described,and for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

PLAYER SDIONSON.

Witnesses:

WM. HUNTER Mvnns, G. W. BALLocH.

IOO

IIO

